if_tlp_cardbus.c revision 1.4
1 /* $NetBSD: if_tlp_cardbus.c,v 1.4 1999/12/07 07:36:19 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * CardBus bus front-end for the Digital Semiconductor ``Tulip'' (21x4x) 42 * Ethernet controller family driver. 43 * 44 * TODO: 45 * 46 * - power management 47 * - add support for the Xircom clone 48 */ 49 50 #include "opt_inet.h" 51 #include "opt_ns.h" 52 #include "bpfilter.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/mbuf.h> 57 #include <sys/malloc.h> 58 #include <sys/kernel.h> 59 #include <sys/socket.h> 60 #include <sys/ioctl.h> 61 #include <sys/errno.h> 62 #include <sys/device.h> 63 64 #include <net/if.h> 65 #include <net/if_dl.h> 66 #include <net/if_media.h> 67 #include <net/if_ether.h> 68 69 #if NBPFILTER > 0 70 #include <net/bpf.h> 71 #endif 72 73 #ifdef INET 74 #include <netinet/in.h> 75 #include <netinet/if_inarp.h> 76 #endif 77 78 #ifdef NS 79 #include <netns/ns.h> 80 #include <netns/ns_if.h> 81 #endif 82 83 #include <machine/bus.h> 84 #include <machine/intr.h> 85 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/mii_bitbang.h> 88 89 #include <dev/ic/tulipreg.h> 90 #include <dev/ic/tulipvar.h> 91 92 #include <dev/pci/pcivar.h> 93 #include <dev/pci/pcireg.h> 94 #include <dev/pci/pcidevs.h> 95 96 #include <dev/cardbus/cardbusvar.h> 97 98 /* 99 * PCI configuration space registers used by the Tulip. 100 */ 101 #define TULIP_PCI_IOBA 0x10 /* i/o mapped base */ 102 #define TULIP_PCI_MMBA 0x14 /* memory mapped base */ 103 #define TULIP_PCI_CFDA 0x40 /* configuration driver area */ 104 105 #define CFDA_SLEEP 0x80000000 /* sleep mode */ 106 #define CFDA_SNOOZE 0x40000000 /* snooze mode */ 107 108 struct tulip_cardbus_softc { 109 struct tulip_softc sc_tulip; /* real Tulip softc */ 110 111 /* CardBus-specific goo. */ 112 void *sc_ih; /* interrupt handle */ 113 114 cardbus_devfunc_t sc_ct; /* our CardBus devfuncs */ 115 int sc_intrline; /* our interrupt line */ 116 cardbustag_t sc_tag; 117 118 int sc_cbenable; /* what CardBus access type to enable */ 119 int sc_csr; /* CSR bits */ 120 }; 121 122 int tlp_cardbus_match __P((struct device *, struct cfdata *, void *)); 123 void tlp_cardbus_attach __P((struct device *, struct device *, void *)); 124 125 struct cfattach tlp_cardbus_ca = { 126 sizeof(struct tulip_cardbus_softc), 127 tlp_cardbus_match, tlp_cardbus_attach, 128 }; 129 130 const struct tulip_cardbus_product { 131 u_int32_t tcp_vendor; /* PCI vendor ID */ 132 u_int32_t tcp_product; /* PCI product ID */ 133 tulip_chip_t tcp_chip; /* base Tulip chip type */ 134 int tcp_pmreg; /* power management register offset */ 135 } tlp_cardbus_products[] = { 136 { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21142, 137 TULIP_CHIP_21142, 0xe0 }, 138 139 { 0, 0, 140 TULIP_CHIP_INVALID, 0 }, 141 }; 142 143 const char *tlp_cardbus_chip_names[] = TULIP_CHIP_NAMES; 144 145 const struct tulip_cardbus_product *tlp_cardbus_lookup 146 __P((const struct cardbus_attach_args *)); 147 148 const struct tulip_cardbus_product * 149 tlp_cardbus_lookup(ca) 150 const struct cardbus_attach_args *ca; 151 { 152 const struct tulip_cardbus_product *tcp; 153 154 for (tcp = tlp_cardbus_products; 155 tlp_cardbus_chip_names[tcp->tcp_chip] != NULL; 156 tcp++) { 157 if (PCI_VENDOR(ca->ca_id) == tcp->tcp_vendor && 158 PCI_PRODUCT(ca->ca_id) == tcp->tcp_product) 159 return (tcp); 160 } 161 return (NULL); 162 } 163 164 int 165 tlp_cardbus_match(parent, match, aux) 166 struct device *parent; 167 struct cfdata *match; 168 void *aux; 169 { 170 struct cardbus_attach_args *ca = aux; 171 172 if (tlp_cardbus_lookup(ca) != NULL) 173 return (1); 174 175 return (0); 176 } 177 178 void 179 tlp_cardbus_attach(parent, self, aux) 180 struct device *parent, *self; 181 void *aux; 182 { 183 struct tulip_cardbus_softc *csc = (void *) self; 184 struct tulip_softc *sc = &csc->sc_tulip; 185 struct cardbus_attach_args *ca = aux; 186 cardbus_devfunc_t ct = ca->ca_ct; 187 cardbus_chipset_tag_t cc = ct->ct_cc; 188 cardbus_function_tag_t cf = ct->ct_cf; 189 const struct tulip_cardbus_product *tcp; 190 u_int8_t enaddr[ETHER_ADDR_LEN]; 191 pcireg_t reg; 192 193 sc->sc_devno = ca->ca_device; 194 sc->sc_dmat = ca->ca_dmat; 195 csc->sc_ct = ct; 196 csc->sc_tag = ca->ca_tag; 197 csc->sc_intrline = ca->ca_intrline; 198 199 tcp = tlp_cardbus_lookup(ca); 200 if (tcp == NULL) { 201 printf("\n"); 202 panic("tlp_cardbus_attach: impossible"); 203 } 204 sc->sc_chip = tcp->tcp_chip; 205 206 /* 207 * By default, Tulip registers are 8 bytes long (4 bytes 208 * followed by a 4 byte pad). 209 */ 210 sc->sc_regshift = 3; 211 212 /* 213 * Get revision info, and set some chip-specific variables. 214 */ 215 sc->sc_rev = PCI_REVISION(ca->ca_class); 216 switch (sc->sc_chip) { 217 case TULIP_CHIP_21142: 218 if (sc->sc_rev >= 0x20) 219 sc->sc_chip = TULIP_CHIP_21143; 220 break; 221 222 default: 223 /* Nothing. */ 224 } 225 226 printf(": %s Ethernet, pass %d.%d\n", 227 tlp_cardbus_chip_names[sc->sc_chip], 228 (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 229 230 /* 231 * Check to see if the device is in power-save mode, and 232 * bring it out if necessary. 233 */ 234 switch (sc->sc_chip) { 235 case TULIP_CHIP_21142: 236 case TULIP_CHIP_21143: 237 /* 238 * Clear the "sleep mode" bit in the CFDA register. 239 */ 240 reg = cardbus_conf_read(cc, cf, ca->ca_tag, TULIP_PCI_CFDA); 241 if (reg & (CFDA_SLEEP|CFDA_SNOOZE)) 242 cardbus_conf_write(cc, cf, ca->ca_tag, TULIP_PCI_CFDA, 243 reg & ~(CFDA_SLEEP|CFDA_SNOOZE)); 244 break; 245 246 default: 247 /* Nothing. */ 248 } 249 250 /* 251 * Map the device. 252 */ 253 csc->sc_csr = PCI_COMMAND_MASTER_ENABLE; 254 if (Cardbus_mapreg_map(csc->sc_ct, TULIP_PCI_MMBA, 255 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 256 &sc->sc_st, &sc->sc_sh, NULL, NULL) == 0) { 257 csc->sc_cbenable = CARDBUS_MEM_ENABLE; 258 csc->sc_csr |= PCI_COMMAND_MEM_ENABLE; 259 } else if (Cardbus_mapreg_map(csc->sc_ct, TULIP_PCI_IOBA, 260 PCI_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, NULL, NULL) == 0) { 261 csc->sc_cbenable = CARDBUS_IO_ENABLE; 262 csc->sc_csr |= PCI_COMMAND_IO_ENABLE; 263 } else { 264 printf("%s: unable to map device registers\n", 265 sc->sc_dev.dv_xname); 266 return; 267 } 268 269 /* Make sure the right access type is on the CardBus bridge. */ 270 (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cbenable); 271 272 /* Enable the appropriate bits in the PCI CSR. */ 273 reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG); 274 reg = (reg & ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE)) | 275 csc->sc_csr; 276 cardbus_conf_write(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG, reg); 277 278 /* 279 * Read the contents of the Ethernet Address ROM/SROM. Some 280 * chips have a 128 byte SROM (6 address bits), and some 281 * have a 512 byte SROM (8 address bits). 282 */ 283 sc->sc_srom_addrbits = 6; 284 try_again: 285 memset(sc->sc_srom, 0, sizeof(sc->sc_srom)); 286 tlp_read_srom(sc, 0, TULIP_ROM_SIZE(sc->sc_srom_addrbits) >> 1, 287 sc->sc_srom); 288 #if 0 289 { 290 int i; 291 292 printf("SROM CONTENTS:"); 293 for (i = 0; i < TULIP_ROM_SIZE(sc->sc_srom_addrbits); i++) { 294 if ((i % 8) == 0) 295 printf("\n\t"); 296 printf("0x%02x ", sc->sc_srom[i]); 297 } 298 printf("\n"); 299 } 300 #endif 301 302 /* 303 * Deal with chip/board quirks. This includes setting up 304 * the mediasw, and extracting the Ethernet address from 305 * the rombuf. 306 */ 307 switch (sc->sc_chip) { 308 case TULIP_CHIP_21142: 309 case TULIP_CHIP_21143: 310 /* Check for new format SROM. */ 311 if (tlp_isv_srom_enaddr(sc, enaddr) == 0) { 312 /* 313 * Not an ISV SROM; can't cope, for now. 314 */ 315 goto cant_cope; 316 } else { 317 /* 318 * We start out with the 2114x ISV media switch. 319 * When we search for quirks, we may change to 320 * a different switch. 321 */ 322 sc->sc_mediasw = &tlp_2114x_isv_mediasw; 323 } 324 325 /* 326 * Bail out now if we can't deal with this board. 327 */ 328 if (sc->sc_mediasw == NULL) 329 goto cant_cope; 330 break; 331 332 default: 333 cant_cope: 334 /* 335 * Try reading it again, with larger SROM 336 * size, if we haven't already. 337 */ 338 if (sc->sc_srom_addrbits != 8) { 339 sc->sc_srom_addrbits = 8; 340 goto try_again; 341 } 342 343 printf("%s: sorry, unable to handle your board\n", 344 sc->sc_dev.dv_xname); 345 return; 346 } 347 348 /* 349 * Map and establish the interrupt. 350 */ 351 csc->sc_ih = cardbus_intr_establish(cc, cf, ca->ca_intrline, IPL_NET, 352 tlp_intr, sc); 353 if (csc->sc_ih == NULL) { 354 printf("%s: unable to establish interrupt at %d\n", 355 sc->sc_dev.dv_xname, ca->ca_intrline); 356 return; 357 } 358 printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname, 359 ca->ca_intrline); 360 361 /* 362 * Finish off the attach. 363 */ 364 tlp_attach(sc, enaddr); 365 } 366
Indexes created Tue Sep 30 11:09:46 GMT 2025